Java DataOutputBuffer.getData方法代码示例

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
@Test
public void test() throws IOException
{
    InetAddress endpoint = InetAddress.getByName("127.0.0.1");
    int generation = 0;
    int maxVersion = 123;
    GossipDigest expected = new GossipDigest(endpoint, generation, maxVersion);
    //make sure we get the same values out
    assertEquals(endpoint, expected.getEndpoint());
    assertEquals(generation, expected.getGeneration());
    assertEquals(maxVersion, expected.getMaxVersion());

    //test the serialization and equals
    DataOutputBuffer output = new DataOutputBuffer();
    GossipDigest.serializer.serialize(expected, output, MessagingService.current_version);

    ByteArrayInputStream input = new ByteArrayInputStream(output.getData(), 0, output.getLength());
    GossipDigest actual = GossipDigest.serializer.deserialize(new DataInputStream(input), MessagingService.current_version);
    assertEquals(0, expected.compareTo(actual));
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
@Test
public void test() throws IOException
{
    InetAddress endpoint = InetAddress.getByName("127.0.0.1");
    int generation = 0;
    int maxVersion = 123;
    GossipDigest expected = new GossipDigest(endpoint, generation, maxVersion);
    //make sure we get the same values out
    assertEquals(endpoint, expected.getEndpoint());
    assertEquals(generation, expected.getGeneration());
    assertEquals(maxVersion, expected.getMaxVersion());

    //test the serialization and equals
    DataOutputBuffer output = new DataOutputBuffer();
    GossipDigest.serializer.serialize(expected, output, MessagingService.current_version);

    DataInputPlus input = new DataInputBuffer(output.getData());
    GossipDigest actual = GossipDigest.serializer.deserialize(input, MessagingService.current_version);
    assertEquals(0, expected.compareTo(actual));
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
@Test
public void test() throws IOException
{
    InetAddress endpoint = InetAddress.getByName("127.0.0.1");
    int generation = 0;
    int maxVersion = 123;
    GossipDigest expected = new GossipDigest(endpoint, generation, maxVersion);
    //make sure we get the same values out
    assertEquals(endpoint, expected.getEndpoint());
    assertEquals(generation, expected.getGeneration());
    assertEquals(maxVersion, expected.getMaxVersion());
    
    //test the serialization and equals
    DataOutputBuffer output = new DataOutputBuffer();
    GossipDigest.serializer().serialize(expected, output, MessagingService.version_);
    
    ByteArrayInputStream input = new ByteArrayInputStream(output.getData(), 0, output.getLength());
    GossipDigest actual = GossipDigest.serializer().deserialize(new DataInputStream(input), MessagingService.version_);
    assertEquals(0, expected.compareTo(actual));
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private void populateAndReserialize(IBitSet bs) throws IOException
{
    for (long i = 0; i < bs.capacity(); i++)
        if (random.nextBoolean())
            bs.set(i);

    DataOutputBuffer out = new DataOutputBuffer();
    bs.serialize(out);
    DataInputStream in = new DataInputStream(new ByteArrayInputStream(out.getData()));
    OffHeapBitSet newbs = OffHeapBitSet.deserialize(in);
    compare(bs, newbs);
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private ReadCommand serializeAndDeserializeReadMessage(ReadCommand rm) throws IOException
{
    ReadCommandSerializer rms = ReadCommand.serializer;
    DataOutputBuffer out = new DataOutputBuffer();
    ByteArrayInputStream bis;

    rms.serialize(rm, out, MessagingService.current_version);
    bis = new ByteArrayInputStream(out.getData(), 0, out.getLength());
    return rms.deserialize(new DataInputStream(bis), MessagingService.current_version);
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private static void populateAndReserialize(IBitSet bs) throws IOException
{
    for (long i = 0; i < bs.capacity(); i++)
        if (random.nextBoolean())
            bs.set(i);

    DataOutputBuffer out = new DataOutputBuffer();
    bs.serialize(out);
    DataInputStream in = new DataInputStream(new ByteArrayInputStream(out.getData()));
    try (OffHeapBitSet newbs = OffHeapBitSet.deserialize(in))
    {
        compare(bs, newbs);
    }
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private ReadCommand serializeAndDeserializeReadMessage(ReadCommand rm) throws IOException
{
    IVersionedSerializer<ReadCommand> rms = ReadCommand.serializer;
    DataOutputBuffer out = new DataOutputBuffer();

    rms.serialize(rm, out, MessagingService.current_version);

    DataInputPlus dis = new DataInputBuffer(out.getData());
    return rms.deserialize(dis, MessagingService.current_version);
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private void populateAndReserialize(IBitSet bs) throws IOException
{
    for (long i = 0; i < bs.capacity(); i++)
        if (random.nextBoolean())
            bs.set(i);

    DataOutputBuffer dos = new DataOutputBuffer();
    bs.serialize(dos);
    DataInputStream dis = new DataInputStream(new ByteArrayInputStream(dos.getData()));
    OffHeapBitSet newbs = OffHeapBitSet.deserialize(dis);
    compare(bs, newbs);
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private ReadCommand serializeAndDeserializeReadMessage(ReadCommand rm) throws IOException
{
    ReadCommandSerializer rms = ReadCommand.serializer;
    DataOutputBuffer dos = new DataOutputBuffer();
    ByteArrayInputStream bis;

    rms.serialize(rm, dos, MessagingService.current_version);
    bis = new ByteArrayInputStream(dos.getData(), 0, dos.getLength());
    return rms.deserialize(new DataInputStream(bis), MessagingService.current_version);
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private ReadCommand serializeAndDeserializeReadMessage(ReadCommand rm) throws IOException
{
    ReadCommandSerializer rms = ReadCommand.serializer();
    DataOutputBuffer dos = new DataOutputBuffer();
    ByteArrayInputStream bis;

    rms.serialize(rm, dos, MessagingService.version_);
    bis = new ByteArrayInputStream(dos.getData(), 0, dos.getLength());
    return rms.deserialize(new DataInputStream(bis), MessagingService.version_);
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
private static String uncompress(ByteBuffer query, Compression compression) throws InvalidRequestException
{
    String queryString = null;

    // Decompress the query string.
    try
    {
        switch (compression)
        {
            case GZIP:
                DataOutputBuffer decompressed = new DataOutputBuffer();
                byte[] outBuffer = new byte[1024], inBuffer = new byte[1024];

                Inflater decompressor = new Inflater();

                int lenRead = 0;
                while (true)
                {
                    if (decompressor.needsInput())
                        lenRead = query.remaining() < 1024 ? query.remaining() : 1024;
                    query.get(inBuffer, 0, lenRead);
                    decompressor.setInput(inBuffer, 0, lenRead);

                    int lenWrite = 0;
                    while ((lenWrite = decompressor.inflate(outBuffer)) != 0)
                        decompressed.write(outBuffer, 0, lenWrite);

                    if (decompressor.finished())
                        break;
                }

                decompressor.end();

                queryString = new String(decompressed.getData(), 0, decompressed.getLength(), StandardCharsets.UTF_8);
                break;
            case NONE:
                try
                {
                    queryString = ByteBufferUtil.string(query);
                }
                catch (CharacterCodingException ex)
                {
                    throw new InvalidRequestException(ex.getMessage());
                }
                break;
        }
    }
    catch (DataFormatException e)
    {
        throw new InvalidRequestException("Error deflating query string.");
    }
    return queryString;
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
@Test
public void testSerialization() throws IOException
{
    CFMetaData cfm = Keyspace.open(KEYSPACE).getColumnFamilyStore(CF_STANDARD).metadata;

    long now = FBUtilities.timestampMicros();
    int version = MessagingService.current_version;
    UUID uuid = UUIDGen.getTimeUUID();

    List<Mutation> mutations = new ArrayList<>(10);
    for (int i = 0; i < 10; i++)
    {
        mutations.add(new RowUpdateBuilder(cfm, FBUtilities.timestampMicros(), bytes(i))
                      .clustering("name" + i)
                      .add("val", "val" + i)
                      .build());
    }

    Batch batch1 = Batch.createLocal(uuid, now, mutations);
    assertEquals(uuid, batch1.id);
    assertEquals(now, batch1.creationTime);
    assertEquals(mutations, batch1.decodedMutations);

    DataOutputBuffer out = new DataOutputBuffer();
    Batch.serializer.serialize(batch1, out, version);

    assertEquals(out.getLength(), Batch.serializer.serializedSize(batch1, version));

    DataInputPlus dis = new DataInputBuffer(out.getData());
    Batch batch2 = Batch.serializer.deserialize(dis, version);

    assertEquals(batch1.id, batch2.id);
    assertEquals(batch1.creationTime, batch2.creationTime);
    assertEquals(batch1.decodedMutations.size(), batch2.encodedMutations.size());

    Iterator<Mutation> it1 = batch1.decodedMutations.iterator();
    Iterator<ByteBuffer> it2 = batch2.encodedMutations.iterator();
    while (it1.hasNext())
    {
        try (DataInputBuffer in = new DataInputBuffer(it2.next().array()))
        {
            assertEquals(it1.next().toString(), Mutation.serializer.deserialize(in, version).toString());
        }
    }
}
 

import org.apache.cassandra.io.util.DataOutputBuffer; //导入方法依赖的package包/类
/**
 * This is just to test decodeMutations() when deserializing,
 * since Batch will never be serialized at a version 2.2.
 * @throws IOException
 */
@Test
public void testSerializationNonCurrentVersion() throws IOException
{
    CFMetaData cfm = Keyspace.open(KEYSPACE).getColumnFamilyStore(CF_STANDARD).metadata;

    long now = FBUtilities.timestampMicros();
    int version = MessagingService.VERSION_22;
    UUID uuid = UUIDGen.getTimeUUID();

    List<Mutation> mutations = new ArrayList<>(10);
    for (int i = 0; i < 10; i++)
    {
        mutations.add(new RowUpdateBuilder(cfm, FBUtilities.timestampMicros(), bytes(i))
                      .clustering("name" + i)
                      .add("val", "val" + i)
                      .build());
    }

    Batch batch1 = Batch.createLocal(uuid, now, mutations);
    assertEquals(uuid, batch1.id);
    assertEquals(now, batch1.creationTime);
    assertEquals(mutations, batch1.decodedMutations);

    DataOutputBuffer out = new DataOutputBuffer();
    Batch.serializer.serialize(batch1, out, version);

    assertEquals(out.getLength(), Batch.serializer.serializedSize(batch1, version));

    DataInputPlus dis = new DataInputBuffer(out.getData());
    Batch batch2 = Batch.serializer.deserialize(dis, version);

    assertEquals(batch1.id, batch2.id);
    assertEquals(batch1.creationTime, batch2.creationTime);
    assertEquals(batch1.decodedMutations.size(), batch2.decodedMutations.size());

    Iterator<Mutation> it1 = batch1.decodedMutations.iterator();
    Iterator<Mutation> it2 = batch2.decodedMutations.iterator();
    while (it1.hasNext())
        assertEquals(it1.next().toString(), it2.next().toString());
}